/*
 * Copyright 2011 es-planning Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package jp.arctos.ursus.extensions.net.example.echo.tcp.server;

import java.nio.ByteBuffer;

import jp.arctos.ursus.extension.net.ReceivedContext;
import jp.arctos.ursus.extension.net.SendRequest;
import jp.arctos.ursus.extension.net.ServerSocketEventAdaptor;
import jp.arctos.ursus.extension.net.ServerSocketSessionHandler;
import jp.arctos.ursus.extension.net.SocketSessionHandler;

public class ServerSocketEchoServerEventHandler extends ServerSocketEventAdaptor {

    @Override
    public void accepted(ServerSocketSessionHandler serverSessionHandler, SocketSessionHandler newSessionHandler) {
        // 接続を受け付けた際の処理
        System.out.println("Accepted.");
    }

    @Override
    public void received(SocketSessionHandler sessionHandler, ReceivedContext context) {
        // クライアントからメッセージを受信した際の処理
        if (check(context.getBuffer())) {
            // 折り返しメッセージを編集
            System.out.println("Received request.");
            byte[] bytes = "echo-response".getBytes();
            ByteBuffer buffer = ByteBuffer.allocate(bytes.length);
            buffer.put(bytes);
            buffer.flip();
            SendRequest request = new SendRequest(buffer);

            // 折り返しメッセージを送信
            sessionHandler.send(request);
            System.out.println("Sent response.");
        }
    }

    private boolean check(ByteBuffer buffer) {
        // 受信したメッセージをチェックする
        byte[] bytes = new byte[buffer.remaining()];
        buffer.get(bytes);
        String str = new String(bytes);
        if ("echo-request".equals(str)) {
            return true;
        }
        return false;
    }
}
